Vilas County, Wisconsin
UW45
1621800
492.99
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
Upper Buckatabon Lake was put on the 303(d) list due to mercury in 1998 and was removed based on 2001 updated Fish Consumption advisories.
This lake was assessed for phosphorus and algae every two-year cycle from 2012 to 2024; impairment for phosphorus was identified in 2016 and confirmed in subsequent years.Pollutant
Total Phosphorus
Listed For
Recreation
Impairments
Impairment Unknown
Current Use
Restricted Recreation
Listing Status
303d Listed
Attainable Use
Recreation
Priority
Low
Designated Use
Recreation
303(d) ID
2016-241
Listing Date
4/1/2016
Impaired Water Notes
This water was assessed during the 2016 listing cycle; total phosphorus sample data exceed 2016 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use, however chlorophyll data do not exceed REC or FAL thresholds.
Date
8/7/2015
Impaired Water Notes
This water was assessed during the 2020 listing cycle; total phosphorus sample data exceeded 2020 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use, however chlorophyll data did not exceed REC or FAL thresholds. Based on the most updated information, no change in existing impaired waters listing is needed.
Date
6/19/2019
Pollutant
Mercury
Listed For
Impairments
NA
Current Use
Listing Status
Pollutant Removed
Attainable Use
Priority
Delisted 2020
Designated Use
303(d) ID
501
Listing Date
4/1/1998
Impaired Water Notes
This listing was part of a set removed from the impaired waters list due to a change in fish consumption advisory levels in 2001. In 2001 Wisconsin DNR put into effect a statewide fish consumption advisory for mercury due to atmospheric deposition. Most of the lakes removed from the specific fish consumption advisories list in 2001 were not removed from the impaired waters list even though the thresholds had changed. For the 2020 assessment process WDNR requested delisting of 91 waters with residual mercury listings from prior to 2001. This request was approved by US EPA.
Date
9/4/2018